Bront: I think I saw somewhere that regular folks are called "Fleshforged". I'm going to re-read the relevant parts of Races of Eberron and see if I can find where it's used.
The Necro/Pally thing: I see no reason at all in the Necromancer's bio why he should be evil. Will he put others to great trouble in order to improve his own station even the tiniest bit? Is he completely irreconcilable to concepts of decency and morality?
Looking over Agarndas' bio reads more objectively than anything. Such objectivity is something I'd see from a True Neutral character rather than a Lawful Evil. He appears to have little respect for human laws - following around criminals and inspecting bodies. But, he does not kill anything himself, so how can he be considered evil? He is just an observer and a learner, not the standard LE plotter/planner/mastermind.
So, the Paladin is ok, because the Necromancer is not really evil. (Unless you WANT to be evil Ringmereth... then you'll have to change your bio, because that character is NOT evil as it stands.)
Come to think of it, I'm going to check all of your alignments. This may even become a campaign theme and I'll watch your actions carefully to see if you stick by your chosen alignment.
Edit: Oh, and make sure your character has a well-planned bio, which includes a section explaining why your character responded to the summons and why your character STAYED with the group.